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Mean Well

Mean Well LDB-500LW DC/DC LED Driver CC 500mA - Buck-boost

contant currentbuck-boosthigh efficiency up to 91%wire style
SKU LDB-500LW
$12.61 USD
Shipping calculated at checkout.
Available to order
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Overview

LDB-500LW is the model of this series: typical efficiency 87%. Type W: W : wire style.

Features

  • DC/DC buck-boost converter
  • Constant current output: 300mA to 600mA
  • Wide input voltage: 9 ~ 36VDC
  • Wide output LED string voltage: 2 ~ 40VDC
  • High efficiency up to 91%
  • Comply with BS EN/EN55015 and FCC part15
  • Built-in PWM and remote ON/OFF control
  • Protections: Short circuit / Over temperature
  • Cooling by free air convection
  • Fully encapsulated with IP67 level
  • Compact size
  • High reliability
  • Suitable for driving illumination LED
  • 3 years warranty

Specifications

LDB-500LWSpecifications from the official datasheet (2024-08-02 edition)

OUTPUT

CURRENT RANGE
500mA
VOLTAGE RANGENote.4
2 ~ 32VDC
CURRENT ACCURACY (Typ.)
±5%
RIPPLE & NOISE(max.)Note.2
150mVp-p
SWITCHING FREQENCY
1000KHz
NO LOAD OUTPUT VOLTAGE
75VDC

INPUT

VOLTAGE RANGENote.4
9 ~ 30VDC
EFFICIENCY (max.) 12VDC
87%
EFFICIENCY (max.) 24VDC
89%
DC CURRENT Full load 12VDC
1590mA
DC CURRENT Full load 24VDC
790mA
DC CURRENT No load
2mA (Vin 24VDC)
FILTER
Capacitor

PWM DIMMING & ON/OFF CONTROL

REMOTE ON/OFF
Leave open if not use Power ON with dimming: DIM ~ -Vin >2 ~ 10VDC or open circuit Power OFF : DIM ~ -Vin < 0.5VDC or short
PWM FREQUENCY
100 ~ 1KHz
MAX. PWM SIGNAL CURRENT
1mA

PROTECTION

SHORT CIRCUIT
Regulated at rated output current Protection type: Can be continued, recovers automatically after fault condition is removed
OVER TEMPERATURE
Tj 145℃ typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.
-40 ~ + 70℃(Refer to derating curve)
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-55 ~ +125℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03% / ℃
VIBRATION
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
OPERATING CASE TEMP. (max.)
115℃

EMC

SAFETY STANDARDS
EAC TP TC 020/2011 approved
EMC EMISSION
Compliance to BS EN/EN55015, FCC part 15 class B, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,6,8, light industry level, criteria A, EAC TP TC 020

OTHERS

MTBF
350Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H)
WEIGHT
LDB-L:15.6g(15pcs/Tube) ; LDB-LW:18g(20pcs/Box), Please order Base on MPQ
POTTING MATERIAL
Expoxy(UL94-V0)

MODEL ENCODING

Blank
Blank : pin style
W (this model)
W : wire style
Test conditions and notes4
  1. 1.All parameters are specified at normal input(24VDC), rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
  3. 3.The output of LDB-L should not be connected to the input of the same unit or output from other sources.
  4. 4. If input voltage is 36V then the output voltage operating range had better <38V.

Technical drawings

LDB-500LW Mechanical Specification
Mechanical Specification
LDB-500LW Derating Curve
Derating Curve
LDB-500LW Safe Operating Area
Safe Operating Area
LDB-500LW PWM Dimming Control
PWM Dimming Control
LDB-500LW Efficiency VS Output Voltage(Number
Efficiency VS Output Voltage(Number
LDB-500LW Packing
Packing
LDB-500LW Standard Tube Packing
Standard Tube Packing

Downloads

FAQ

Can the LDB-500LW power a 500mA LED downlight module?

Yes, this is a constant current LED driver with a 500mA output, so it matches downlight modules rated for 500mA. The LED load still needs to remain within the 2-32V CC range.

Is the LDB-500LW suitable for illuminated sign modules or channel letters?

It can be used for signage modules or small LED arrays when the LEDs require 500mA constant current rather than constant voltage. The total LED forward voltage must stay inside the 2-32V constant current range.

Can this driver be used for a compact constant current LED array?

Yes, if the array is designed around 500mA operation and stays within the 2-32V output range. The driver regulates current, so it is intended for constant current arrays rather than fixed-voltage LED strips.

How do I size LEDs for the LDB-500LW?

Use the 500mA output current and the 2-32V CC output range as the main sizing criteria. The exact number of LEDs depends on the forward voltage of each LED, so compatibility is based on the total LED voltage rather than a stated LED count.

Is the LDB-500LW appropriate for outdoor or sealed applications?

The IP67 Waterproof rating makes it appropriate for applications that need strong dust and water resistance. It is also rated for -40°C to +70°C operation (refer to the derating curve), which supports use in challenging conditions.

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Mean Well LDB-500LW DC/DC LED Driver CC 500mA - Buck-boost
Mean Well

Mean Well LDB-500LW DC/DC LED Driver CC 500mA - Buck-boost

$12.61 USD

LDB-500LW is the model of this series: typical efficiency 87%. Type W: W : wire style.

Features

  • DC/DC buck-boost converter
  • Constant current output: 300mA to 600mA
  • Wide input voltage: 9 ~ 36VDC
  • Wide output LED string voltage: 2 ~ 40VDC
  • High efficiency up to 91%
  • Comply with BS EN/EN55015 and FCC part15
  • Built-in PWM and remote ON/OFF control
  • Protections: Short circuit / Over temperature
  • Cooling by free air convection
  • Fully encapsulated with IP67 level
  • Compact size
  • High reliability
  • Suitable for driving illumination LED
  • 3 years warranty
View product

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